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ls-tree: make "line_termination" less generic

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The "ls-tree" command isn't capable of ending "lines" with anything
except '\n' or '\0', and in the latter case we can avoid calling
write_name_quoted_relative() entirely. Let's do that, less for
optimization and more for clarity, the write_name_quoted_relative()
API itself does much the same thing.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Teng Long <dyroneteng@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Ævar Arnfjörð Bjarmason 2023-01-12 17:11:33 +08:00 committed by Junio C Hamano
parent 65d1f6c9fa
commit e6c75d8dd7
1 changed files with 44 additions and 14 deletions
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58
builtin/ls-tree.c
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@ -39,7 +39,7 @@ static void expand_objectsize(struct strbuf *line, const struct object_id *oid,
}
struct ls_tree_options {
int line_termination;
unsigned null_termination:1;
int abbrev;
enum ls_tree_path_options {
LS_RECURSIVE = 1 << 0,
@ -166,7 +166,7 @@ static int show_tree_fmt(const struct object_id *oid, struct strbuf *base,
baselen = base->len;
strbuf_expand(&sb, options->format, expand_show_tree, &cb_data);
strbuf_addch(&sb, options->line_termination);
strbuf_addch(&sb, options->null_termination ? '\0' : '\n');
fwrite(sb.buf, sb.len, 1, stdout);
strbuf_release(&sb);
strbuf_setlen(base, baselen);
@ -198,10 +198,22 @@ static void show_tree_common_default_long(struct ls_tree_options *options,
const char *pathname,
const size_t baselen)
{
const char *prefix = options->chomp_prefix ? options->ls_tree_prefix : NULL;
strbuf_addstr(base, pathname);
write_name_quoted_relative(base->buf,
options->chomp_prefix ? options->ls_tree_prefix : NULL, stdout,
options->line_termination);
if (options->null_termination) {
struct strbuf sb = STRBUF_INIT;
const char *name = relative_path(base->buf, prefix, &sb);
fputs(name, stdout);
fputc('\0', stdout);
strbuf_release(&sb);
} else {
write_name_quoted_relative(base->buf, prefix, stdout, '\n');
}
strbuf_setlen(base, baselen);
}
@ -264,15 +276,25 @@ static int show_tree_name_only(const struct object_id *oid, struct strbuf *base,
int recurse;
const size_t baselen = base->len;
enum object_type type = object_type(mode);
const char *prefix;
early = show_tree_common(options, &recurse, base, pathname, type);
if (early >= 0)
return early;
prefix = options->chomp_prefix ? options->ls_tree_prefix : NULL;
strbuf_addstr(base, pathname);
write_name_quoted_relative(base->buf,
options->chomp_prefix ? options->ls_tree_prefix : NULL,
stdout, options->line_termination);
if (options->null_termination) {
struct strbuf sb = STRBUF_INIT;
const char *name = relative_path(base->buf, prefix, &sb);
fputs(name, stdout);
fputc('\0', stdout);
strbuf_release(&sb);
} else {
write_name_quoted_relative(base->buf, prefix, stdout, '\n');
}
strbuf_setlen(base, baselen);
return recurse;
}
@ -285,12 +307,19 @@ static int show_tree_object(const struct object_id *oid, struct strbuf *base,
int early;
int recurse;
enum object_type type = object_type(mode);
const char *str;
early = show_tree_common(options, &recurse, base, pathname, type);
if (early >= 0)
return early;
printf("%s%c", find_unique_abbrev(oid, options->abbrev), options->line_termination);
str = find_unique_abbrev(oid, options->abbrev);
if (options->null_termination) {
fputs(str, stdout);
fputc('\0', stdout);
} else {
puts(str);
}
return recurse;
}
@ -342,9 +371,8 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
int i, full_tree = 0;
read_tree_fn_t fn = NULL;
enum ls_tree_cmdmode cmdmode = MODE_DEFAULT;
struct ls_tree_options options = {
.line_termination = '\n',
};
int null_termination = 0;
struct ls_tree_options options = { 0 };
const struct option ls_tree_options[] = {
OPT_BIT('d', NULL, &options.ls_options, N_("only show trees"),
LS_TREE_ONLY),
@ -352,8 +380,8 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
LS_RECURSIVE),
OPT_BIT('t', NULL, &options.ls_options, N_("show trees when recursing"),
LS_SHOW_TREES),
OPT_SET_INT('z', NULL, &options.line_termination,
N_("terminate entries with NUL byte"), 0),
OPT_BOOL('z', NULL, &null_termination,
N_("terminate entries with NUL byte")),
OPT_CMDMODE('l', "long", &cmdmode, N_("include object size"),
MODE_LONG),
OPT_CMDMODE(0, "name-only", &cmdmode, N_("list only filenames"),
@ -383,6 +411,8 @@ int cmd_ls_tree(int argc, const char **argv, const char *prefix)
argc = parse_options(argc, argv, prefix, ls_tree_options,
ls_tree_usage, 0);
options.null_termination = null_termination;
if (full_tree) {
options.ls_tree_prefix = prefix = NULL;
options.chomp_prefix = 0;